package com.ruoyi.web.controller.common;

import com.google.code.kaptcha.Producer;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.constant.CacheConstants;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.utils.sign.Base64;
import com.ruoyi.common.utils.uuid.IdUtils;
import com.ruoyi.system.domain.dto.CarDto;
import com.ruoyi.system.service.ISysConfigService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.FastByteArrayOutputStream;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.security.MessageDigest;
import java.util.Arrays;
import java.util.concurrent.TimeUnit;

/**
 * 验证码操作处理
 * 
 * @author ruoyi
 */
@RestController
public class CaptchaController
{
    @Resource(name = "captchaProducer")
    private Producer captchaProducer;

    @Resource(name = "captchaProducerMath")
    private Producer captchaProducerMath;

    @Autowired
    private RedisCache redisCache;
    
    @Autowired
    private ISysConfigService configService;

    private static final Logger log = LoggerFactory.getLogger(CaptchaController.class);

    /**
     * 生成验证码
     */
    @GetMapping("/captchaImage")
    public AjaxResult getCode(HttpServletResponse response) throws IOException
    {
        AjaxResult ajax = AjaxResult.success();
        boolean captchaEnabled = configService.selectCaptchaEnabled();
        ajax.put("captchaEnabled", captchaEnabled);
        if (!captchaEnabled)
        {
            return ajax;
        }

        // 保存验证码信息
        String uuid = IdUtils.simpleUUID();
        String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + uuid;

        String capStr = null, code = null;
        BufferedImage image = null;

        // 生成验证码
        String captchaType = RuoYiConfig.getCaptchaType();
        if ("math".equals(captchaType))
        {
            String capText = captchaProducerMath.createText();
            capStr = capText.substring(0, capText.lastIndexOf("@"));
            code = capText.substring(capText.lastIndexOf("@") + 1);
            image = captchaProducerMath.createImage(capStr);
        }
        else if ("char".equals(captchaType))
        {
            capStr = code = captchaProducer.createText();
            image = captchaProducer.createImage(capStr);
        }

        redisCache.setCacheObject(verifyKey, code, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
        // 转换流信息写出
        FastByteArrayOutputStream os = new FastByteArrayOutputStream();
        try
        {
            ImageIO.write(image, "jpg", os);
        }
        catch (IOException e)
        {
            return AjaxResult.error(e.getMessage());
        }

        ajax.put("uuid", uuid);
        ajax.put("img", Base64.encode(os.toByteArray()));
        return ajax;
    }

    /**
     * 车辆入场
     */
    @PostMapping("/in-car")
    public AjaxResult inCar(CarDto param)
    {
        log.debug("-----------in-1-----------");
        AjaxResult ajax = new AjaxResult();
        log.debug(param.getType());
        log.debug(param.getPlate_num());
        log.debug("-----------in-2-----------");
        ajax.put("error_num", 0);
        ajax.put("error_str", "noerror");
        return ajax;
    }

    /**
     * 车辆入场
     */
    @PostMapping("/out-car")
    public AjaxResult outCar(CarDto param)
    {
        log.debug("-----------out-1-----------");
        AjaxResult ajax = new AjaxResult();
        log.debug(param.getType());
        log.debug(param.getPlate_num());
        log.debug("-----------out-2-----------");
        ajax.put("error_num", 0);
        ajax.put("error_str", "noerror");
        return ajax;
    }
    /**
     * 生成验证码
     */
    @GetMapping("/validateToken")
    public String validateToken(@RequestParam("signature") String signature,
                                @RequestParam("timestamp") String timestamp,
                                @RequestParam("nonce") String nonce,
                                @RequestParam("echostr") String echostr) throws Exception
    {



        log.debug("-----------validateToken-1-----------");

        log.debug(signature);
        log.debug(timestamp);
        log.debug(nonce);
        log.debug(echostr);
        log.debug("-----------validateToken-2-----------");

        String token = "jinzhong2024";

        // 在validateToken方法中添加如下代码
        // 先将token、timestamp、nonce三个参数进行字典排序
        String[] arr = {token, timestamp, nonce};
        Arrays.sort(arr);
        // 将排序后的结果拼接成一个字符串
        String content = arr[0] + arr[1] + arr[2];
        // 使用SHA1算法对拼接后的字符串进行加密
        MessageDigest md = MessageDigest.getInstance("SHA-1");
        byte[] digest = md.digest(content.getBytes());
        String result = bytesToHex(digest);

        log.debug(result);


        // 将加密后的结果与signature进行对比，如果一致则验证通过
        if (result.equals(signature)) {

            log.debug("-----------validateToken-3-----------");
            return echostr;
        } else {
            log.debug("-----------validateToken-4-----------");
            return "error";
        }
    }

    // bytesToHex方法用于将字节数组转换为十六进制字符串
    private String bytesToHex(byte[] bytes) {
        StringBuilder sb = new StringBuilder();
        for (byte b : bytes) {
            sb.append(String.format("%02x", b));
        }
        return sb.toString();
    }
}
